René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Start-Job is now 6-10x slower, and does not preserve $env:PSModulePath","articleBody":"\u003c!--\r\n\r\nFor Windows PowerShell 5.1 issues, suggestions, or feature requests please use the following link instead:\r\n- Windows PowerShell [UserVoice](https://windowsserver.uservoice.com/forums/301869-powershell)\r\n\r\nIf it is a bug report:\r\n- make sure you are able to repro it on the latest released version. \r\nYou can install the latest version from https://github.com/PowerShell/PowerShell/releases\r\n- Search the existing issues.\r\n- Refer to the [FAQ](https://github.com/PowerShell/PowerShell/blob/master/docs/FAQ.md).\r\n- Refer to the [known issues](https://docs.microsoft.com/powershell/scripting/whats-new/known-issues-ps6?view=powershell-6).\r\n- Fill out the following repro template:\r\n\r\nIf it's not a bug, please remove the template and elaborate the issue in your own words.\r\n--\u003e\r\n\r\nSteps to reproduce\r\n------------------\r\n\r\n```powershell\r\n$iter = 10\r\n$env:PSModulePath = 'Custom PSModulePath'\r\n\r\nMeasure-Command {\r\n    for( $i = 0; $i -lt $iter; $i++ )\r\n    {\r\n        $job = start-job -ScriptBlock { Write-Host $env:PSModulePath }\r\n    }\r\n}\r\n```\r\n\r\nExpected behavior\r\n-----------------\r\nI should be able to kick off ten jobs in just a few seconds (maybe 2 or 3). When the results of the job come in, I should see `Custom PSModulePath`. This is the behavior in 5.1.\r\n\r\nActual behavior\r\n---------------\r\nIt takes between 12 and 20 seconds. That's longer than a second per job! (and I'm not waiting for the job to finish; this is just the time for `Start-Job` to return) And then the output is the default module path.\r\n\r\nEnvironment data\r\n----------------\r\n\r\n\u003c!-- provide the output of $PSVersionTable --\u003e\r\n\r\n```powershell\r\n\u003e $PSVersionTable\r\nName                           Value\r\n----                           -----\r\nPSVersion                      6.1.0-preview.4\r\nPSEdition                      Core\r\nGitCommitId                    6.1.0-preview.4-26-g668ce91ddb14d71177b4de4f94d99c3e429e4ff7\r\nOS                             Microsoft Windows 10.0.17692\r\nPlatform                       Win32NT\r\nPSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}\r\nPSRemotingProtocolVersion      2.3\r\nSerializationVersion           1.1.0.1\r\nWSManStackVersion              3.0\r\n```\r\n","author":{"url":"https://github.com/jazzdelightsme","@type":"Person","name":"jazzdelightsme"},"datePublished":"2018-07-30T05:57:51.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":13},"url":"https://github.com/7402/PowerShell/issues/7402"}